EN

Swartzia thomasii

Unknown

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

Swartzia thomasii faces severe pressure from deforestation and agricultural expansion throughout its limited range in the Atlantic Forest of Brazil. The species' restricted distribution makes it particularly vulnerable to habitat fragmentation, as remaining forest patches become increasingly isolated. Mining activities and urban development further reduce available habitat, while the slow growth rate typical of leguminous trees limits the species' ability to recover from disturbance.

Threat summary

Habitat

Swartzia thomasii is endemic to the Atlantic Forest (Mata Atlântica) of southeastern Brazil, occurring in lowland and montane rainforest environments. The species typically grows in primary forest understory and forest edges, preferring well-drained soils in areas with high humidity and consistent rainfall.

Other threatened species in FABACEAE

VU

Lonchocarpus crassispermus

Declining
CR

Machaerium orthocarpum

Declining
VU

Senna saeri

Declining
VU

Senna viciifolia

Declining

Frequently asked questions

Why is Swartzia thomasii classified as Endangered?
Swartzia thomasii is classified as Endangered — facing a very high risk of extinction in the wild — because population numbers are declining steeply and key habitats are under sustained pressure. Swartzia thomasii faces severe pressure from deforestation and agricultural expansion throughout its limited range in the Atlantic Forest of Brazil. The species' restricted distribution makes it particularly vulnerable to habitat fragmentation, as remaining forest patches become increasingly isolated. Mining activities and urban development further reduce available habitat, while the slow growth rate typical of leguminous trees limits the species' ability to recover from disturbance.
Where does Swartzia thomasii live?
Swartzia thomasii occurs in across multiple regions. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Swartzia thomasii?
The main threats to Swartzia thomasii are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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